meminfo: Add Smaps(), showmap and friends.
Needed by showmap and also android_s_Debug to classify each allocation
into multiple heaps.
The APIs added are:
ForEachVmaFromFile - Global API to parse a file expected to be in the
same format as /proc/<pid>/smaps and make a callback for each VMA found.
ProcMemInfo::ForEachVma - Same as 'ForEachVmaFromFile' but for a
ProcMemInfo object corresponding to a process(pid).
ProcMemInfo::Smaps - Wrapper to ProcMemInfo::ForEachVma, except the
function collects 'struct Vma' in a member vector and returns the
reference for the same.
Added showmap2 using the APIs and the corresponding tests the same time.
Bug: 111694435
Test: showmap_test.sh
Test: libmeminfo_test 1
Change-Id: I3065809cf94ecf3da88529809701035c47a8ce34
Signed-off-by: Sandeep Patil <sspatil@google.com>
diff --git a/libmeminfo/tools/showmap.cpp b/libmeminfo/tools/showmap.cpp
new file mode 100644
index 0000000..a80fa76
--- /dev/null
+++ b/libmeminfo/tools/showmap.cpp
@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <getopt.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <meminfo/procmeminfo.h>
+
+using ::android::meminfo::Vma;
+
+struct VmaInfo {
+ Vma vma;
+ bool is_bss;
+ uint32_t count;
+
+ VmaInfo() = default;
+ VmaInfo(const Vma& v) : vma(v), is_bss(false), count(1) {}
+ VmaInfo(const Vma& v, bool bss) : vma(v), is_bss(bss), count(1) {}
+ VmaInfo(const Vma& v, const std::string& name, bool bss) : vma(v), is_bss(bss), count(1) {
+ vma.name = name;
+ }
+};
+
+// Global options
+static std::string g_filename = "";
+static bool g_merge_by_names = false;
+static bool g_terse = false;
+static bool g_verbose = false;
+static bool g_show_addr = false;
+static bool g_quiet = false;
+static pid_t g_pid = -1;
+
+static VmaInfo g_total;
+static std::vector<VmaInfo> g_vmas;
+
+[[noreturn]] static void usage(int exit_status) {
+ fprintf(stderr,
+ "%s [-aqtv] [-f FILE] PID\n"
+ "-a\taddresses (show virtual memory map)\n"
+ "-q\tquiet (don't show error if map could not be read)\n"
+ "-t\tterse (show only items with private pages)\n"
+ "-v\tverbose (don't coalesce maps with the same name)\n"
+ "-f\tFILE (read from input from FILE instead of PID)\n",
+ getprogname());
+
+ exit(exit_status);
+}
+
+static bool is_library(const std::string& name) {
+ return (name.size() > 4) && (name[0] == '/') && ::android::base::EndsWith(name, ".so");
+}
+
+static bool insert_before(const VmaInfo& a, const VmaInfo& b) {
+ if (g_show_addr) {
+ return (a.vma.start < b.vma.start || (a.vma.start == b.vma.start && a.vma.end < b.vma.end));
+ }
+
+ return strcmp(a.vma.name.c_str(), b.vma.name.c_str()) < 0;
+}
+
+static void collect_vma(const Vma& vma) {
+ if (g_vmas.empty()) {
+ g_vmas.emplace_back(vma);
+ return;
+ }
+
+ VmaInfo current(vma);
+ VmaInfo& last = g_vmas.back();
+ // determine if this is bss;
+ if (vma.name.empty()) {
+ if (last.vma.end == current.vma.start && is_library(last.vma.name)) {
+ current.vma.name = last.vma.name;
+ current.is_bss = true;
+ } else {
+ current.vma.name = "[anon]";
+ }
+ }
+
+ std::vector<VmaInfo>::iterator it;
+ for (it = g_vmas.begin(); it != g_vmas.end(); it++) {
+ if (g_merge_by_names && (it->vma.name == current.vma.name)) {
+ it->vma.usage.vss += current.vma.usage.vss;
+ it->vma.usage.rss += current.vma.usage.rss;
+ it->vma.usage.pss += current.vma.usage.pss;
+
+ it->vma.usage.shared_clean += current.vma.usage.shared_clean;
+ it->vma.usage.shared_dirty += current.vma.usage.shared_dirty;
+ it->vma.usage.private_clean += current.vma.usage.private_clean;
+ it->vma.usage.private_dirty += current.vma.usage.private_dirty;
+ it->vma.usage.swap += current.vma.usage.swap;
+ it->vma.usage.swap_pss += current.vma.usage.swap_pss;
+ it->is_bss &= current.is_bss;
+ it->count++;
+ break;
+ }
+
+ if (insert_before(current, *it)) {
+ g_vmas.insert(it, current);
+ break;
+ }
+ }
+
+ if (it == g_vmas.end()) {
+ g_vmas.emplace_back(current);
+ }
+}
+
+static void print_header() {
+ const char* addr1 = g_show_addr ? " start end " : "";
+ const char* addr2 = g_show_addr ? " addr addr " : "";
+
+ printf("%s virtual shared shared private private\n", addr1);
+ printf("%s size RSS PSS clean dirty clean dirty swap swapPSS",
+ addr2);
+ if (!g_verbose && !g_show_addr) {
+ printf(" # ");
+ }
+ printf(" object\n");
+}
+
+static void print_divider() {
+ if (g_show_addr) {
+ printf("-------- -------- ");
+ }
+ printf("-------- -------- -------- -------- -------- -------- -------- -------- -------- ");
+ if (!g_verbose && !g_show_addr) {
+ printf("---- ");
+ }
+ printf("------------------------------\n");
+}
+
+static void print_vmainfo(const VmaInfo& v, bool total) {
+ if (g_show_addr) {
+ if (total) {
+ printf(" ");
+ } else {
+ printf("%16" PRIx64 " %16" PRIx64 " ", v.vma.start, v.vma.end);
+ }
+ }
+ printf("%8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64
+ " %8" PRIu64 " %8" PRIu64 " ",
+ v.vma.usage.vss, v.vma.usage.rss, v.vma.usage.pss, v.vma.usage.shared_clean,
+ v.vma.usage.shared_dirty, v.vma.usage.private_clean, v.vma.usage.private_dirty,
+ v.vma.usage.swap, v.vma.usage.swap_pss);
+ if (!g_verbose && !g_show_addr) {
+ printf("%4" PRIu32 " ", v.count);
+ }
+}
+
+static int showmap(void) {
+ if (!::android::meminfo::ForEachVmaFromFile(g_filename, collect_vma)) {
+ if (!g_quiet) {
+ fprintf(stderr, "Failed to parse file %s\n", g_filename.c_str());
+ }
+ return 1;
+ }
+
+ print_header();
+ print_divider();
+
+ for (const auto& v : g_vmas) {
+ g_total.vma.usage.vss += v.vma.usage.vss;
+ g_total.vma.usage.rss += v.vma.usage.rss;
+ g_total.vma.usage.pss += v.vma.usage.pss;
+
+ g_total.vma.usage.private_clean += v.vma.usage.private_clean;
+ g_total.vma.usage.private_dirty += v.vma.usage.private_dirty;
+ g_total.vma.usage.shared_clean += v.vma.usage.shared_clean;
+ g_total.vma.usage.shared_dirty += v.vma.usage.shared_dirty;
+
+ g_total.vma.usage.swap += v.vma.usage.swap;
+ g_total.vma.usage.swap_pss += v.vma.usage.swap_pss;
+ g_total.count += v.count;
+
+ if (g_terse && !(v.vma.usage.private_dirty || v.vma.usage.private_clean)) {
+ continue;
+ }
+
+ print_vmainfo(v, false);
+ printf("%s%s\n", v.vma.name.c_str(), v.is_bss ? " [bss]" : "");
+ }
+
+ print_divider();
+ print_header();
+ print_divider();
+
+ print_vmainfo(g_total, true);
+ printf("TOTAL\n");
+
+ return 0;
+}
+
+int main(int argc, char* argv[]) {
+ signal(SIGPIPE, SIG_IGN);
+ struct option longopts[] = {
+ {"help", no_argument, nullptr, 'h'},
+ {0, 0, nullptr, 0},
+ };
+
+ int opt;
+ while ((opt = getopt_long(argc, argv, "tvaqf:h", longopts, nullptr)) != -1) {
+ switch (opt) {
+ case 't':
+ g_terse = true;
+ break;
+ case 'a':
+ g_show_addr = true;
+ break;
+ case 'v':
+ g_verbose = true;
+ break;
+ case 'q':
+ g_quiet = true;
+ break;
+ case 'f':
+ g_filename = optarg;
+ break;
+ case 'h':
+ usage(EXIT_SUCCESS);
+ default:
+ usage(EXIT_FAILURE);
+ }
+ }
+
+ if (g_filename.empty()) {
+ if ((argc - 1) < optind) {
+ fprintf(stderr, "Invalid arguments: Must provide <pid> at the end\n");
+ usage(EXIT_FAILURE);
+ }
+
+ g_pid = atoi(argv[optind]);
+ if (g_pid <= 0) {
+ fprintf(stderr, "Invalid process id %s\n", argv[optind]);
+ usage(EXIT_FAILURE);
+ }
+
+ g_filename = ::android::base::StringPrintf("/proc/%d/smaps", g_pid);
+ }
+
+ g_merge_by_names = !g_verbose && !g_show_addr;
+ return showmap();
+}